Particle size selective remediation system and method for heavy metals-contaminated soil by dry-disintegration and separation

• Main Authors: Kim Kang Suk, Chae Hee Hun, Jung Jun Gyo, Kang Wan Hyup
• Format: Patent
• Language: English
• Published: 16.05.2017
• Subjects: CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; DISPOSAL OF SOLID WASTE; MILLING GRAIN; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL; PERFORMING OPERATIONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; RECLAMATION OF CONTAMINATED SOIL; RECLAMATION OF CONTAMINED SOIL SOIL; SEPARATING SOLIDS FROM SOLIDS; SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS; SORTING; TRANSPORTING

The present invention relates to a system and method of remediating heavy metal-contaminated soil using dry disintegration in a particle size-selective manner. The system for remediating contaminated soil comprises: a pretreatment unit for pretreating the contaminated soil to control the water content and the size of the soil; a disintegration unit for disintegrating the pretreated soil into individual particles; a particle separation unit for separating the disintegrated particles a standard particle size; a heavy metal removal unit for peeling off the surface of the separated soil particles larger than the standard particle size using a surface friction force and an impact force to remove heavy metals in dry condition; and a separation and collection unit for separating and collecting the peeled-off surface from the soil particles.